I've got a new IMAC, but i don't have all my music or movie purchase on it. I just recently updated iTunes. How do I get my purchases back?

Question

Ive got a new iMac and now that i updated iTunes I do not have all my music and movie purchases.  How can I get it all back?.  I used to have it before update

Answer 1

It doesn't magically transfer itself, you have to do it.  Purchase may present themselves for re-downloading but things such as CD are only on the old machine or on the CD.
Quick answer if you use iTunes' default preferences settings: Copy the entire iTunes folder (and in doing so all its subfolders and files) intact to the other drive. Open iTunes and immediately hold down the option (alt) key (shift on Windows) so you get a prompt to select a library, then guide it to the 'iTunes Library.itl' file in the moved iTunes folder. If you put the copied iTunes folder in the default location of Macintosh HD > Users > *User Name* > Music then you don't even need to start with the option key held down, iTunes will automatically look for it there. (Make sure there isn't anything already in the iTunes folder there that you want to keep since you will be replacing it with the one you are moving.)
Downloading (using iOS or computer) past purchases from the App Store, iBookstore, and iTunes Store - http://support.apple.com/kb/ht2519 - enabled with iTunes 10.3 and newer; not all media formats are available in all countries (see: iTunes in the Cloud, iTunes Match, and iTunes Radio availability by country - http://support.apple.com/kb/HT5085); apps, books (not audiobooks), music, t.v. shows, and movies (some - not all studios have permitted this).  Downloading previously purchased movies and TV shows requires iTunes 10.6 or later.  Discontinued items not available. For items not included in the iCloud list (e.g., ringtones, audiobooks), or locations or computer systems where iCloud is not (yet?) available, you only get one download per fee paid.  Apple recommends,  "... back up your iTunes library. " (http://support.apple.com/kb/ht2519).
Additional tip at https://discussions.apple.com/message/24176756#24176756
  Select the iTunes Store on the left side of iTunes if you have the sidebar displayed, or with the button at the top right.
  Click on Purchased on the right side under Quick Links.
  You can re-download your available previous purchases.